The UTG Dovetail-to-Picatinny Snap-on Rail Adaptors allow users to mount Picatinny rings and accessories onto firearms with a flat dovetail rail interface. Featuring a spring-loaded adjustable width (9mm to 11mm), they ensure a secure fit on most dovetail rails. The removable and threaded vertical stop pin provides extra retention for dovetail rails with stop pin holes. Made from lightweight aluminum and steel, these adaptors offer durability without adding excessive weight. Sold in a 2-pack, they provide a quick and effective mounting solution for optics and accessories.